From b1cf9e5dfbc8967bd7cb2a22ec1e5e521f4e0e6e Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Wed, 31 Jul 2024 13:36:53 -0400
Subject: add clock

---
 kernel/source/syscall.cpp | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

(limited to 'kernel/source/syscall.cpp')

diff --git a/kernel/source/syscall.cpp b/kernel/source/syscall.cpp
index c631df1..803f7d2 100644
--- a/kernel/source/syscall.cpp
+++ b/kernel/source/syscall.cpp
@@ -4,6 +4,7 @@
 #include <hilbert/kernel/paging.hpp>
 #include <hilbert/kernel/input.hpp>
 #include <hilbert/kernel/panic.hpp>
+#include <hilbert/kernel/timer.hpp>
 #include <hilbert/kernel/vfile.hpp>
 
 namespace hilbert::kernel::syscall {
@@ -800,6 +801,29 @@ namespace hilbert::kernel::syscall {
 
   }
 
+  void sleep_syscall(
+    uint64_t &rax, uint64_t &rdi, uint64_t &rsi, uint64_t &rdx) {
+
+    uint64_t mis = rdi;
+    set_zero(rax, rdi, rsi, rdx);
+
+    auto *t = application::running_thread;
+
+    timer::register_sleeping_thread(
+      timer::current_time + mis, t);
+
+    application::yield(t->saved_state);
+
+  }
+
+  void get_time_syscall(
+    uint64_t &rax, uint64_t &rdi, uint64_t &rsi, uint64_t &rdx) {
+
+    set_zero(rax, rdi, rsi, rdx);
+    rax = timer::current_time;
+
+  }
+
   void (*handlers[])(
     uint64_t &rax, uint64_t &rdi, uint64_t &rsi, uint64_t &rdx) = {
 
@@ -827,11 +851,13 @@ namespace hilbert::kernel::syscall {
     &clear_socket_read_queue_syscall,
     &get_environment_variable_length_syscall,
     &get_environment_variable_value_syscall,
-    &set_thread_name_syscall
+    &set_thread_name_syscall,
+    &sleep_syscall,
+    &get_time_syscall
 
   };
 
-  static constexpr int max_syscall_number = 24;
+  static constexpr int max_syscall_number = 26;
 
 }
 
-- 
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